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WO1998018545A1 - Dispositif et procede de detection et de gestion d'une separation liquide dans des emulsions liquides - Google Patents

Dispositif et procede de detection et de gestion d'une separation liquide dans des emulsions liquides Download PDF

Info

Publication number
WO1998018545A1
WO1998018545A1 PCT/US1997/015686 US9715686W WO9818545A1 WO 1998018545 A1 WO1998018545 A1 WO 1998018545A1 US 9715686 W US9715686 W US 9715686W WO 9818545 A1 WO9818545 A1 WO 9818545A1
Authority
WO
WIPO (PCT)
Prior art keywords
tank
pump
float
high density
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1997/015686
Other languages
English (en)
Inventor
Gerald N. Coleman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Caterpillar Inc filed Critical Caterpillar Inc
Priority to DE69709154T priority Critical patent/DE69709154T2/de
Priority to EP97940866A priority patent/EP0935495B1/fr
Priority to AU42548/97A priority patent/AU715418B2/en
Priority to CA002266370A priority patent/CA2266370C/fr
Priority to JP52045098A priority patent/JP3659506B2/ja
Publication of WO1998018545A1 publication Critical patent/WO1998018545A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; Viscous liquids; Paints; Inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2835—Specific substances contained in the oils or fuels
    • G01N33/2847—Water in oils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G01N33/1826—Organic contamination in water
    • G01N33/1833—Oil in water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0324—With control of flow by a condition or characteristic of a fluid
    • Y10T137/0329—Mixing of plural fluids of diverse characteristics or conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2514—Self-proportioning flow systems
    • Y10T137/2534—Liquid level response
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2931—Diverse fluid containing pressure systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85954—Closed circulating system

Definitions

  • the invention relates to an apparatus and method for detecting and handling separation of liquids in a liquid emulsion and more particularly to a device and method for preventing separated liquid disposed in the lower portion of a tank storing an emulsion form being withdrawn via a withdrawal conduit disposed in the lower portion of the tank.
  • Emulsions of different density liquids stored in a tank tend to have the different density liquids coalesce, resulting in the heavy liquid concentrating at the bottom of the tank. If the emulsion is oil and water and it is used as a fuel when just water is withdrawn from the tank there will be no combustion so it is necessary to always withdraw the emulsion.
  • U.S. Patent 3,344,659 describes an apparatus having a reservoir, a valved fluid inlet and a valved fluid outlet.
  • a float within the reservoirs designed to be buoyantly supported at the interface between the two separated liquids such as oil and water.
  • An indicator is carried by the float and cooperates with a recorder to provide a record of fluctuations in the height of the interface over a period of time.
  • a control mechanism induces a sequence of valve operations where the inlet is opened and remains open until the incoming fluid has reached a particular level within the reservoir. The inlet is then closed and remains closed along with the outlet while separation of the liquids occurs. The outlet is then opened. The height of the interface provides an indication of the composition of the emulsion.
  • an apparatus and method of detecting and handling the separation of high density liquid from an emulsion by preventing the high density liquid from being withdrawn from a withdrawal conduit disposed in fluid communication with the lower portion of the tank.
  • an apparatus for preventing separated high density liquid from an emulsion of different density liquids stored in a tank from being withdrawn via a withdrawal conduit disposed in fluid communication with a lower portion of the tank, when made in accordance with this invention is characterized by a float disposed within the tank. The float has a density which will cause it to sink in the emulsion and float on the high density liquid.
  • a pump is disposed to take its suction from the lower portion of the tank and discharging adjacent the central portion of the tank and a drive is cooperatively associated with the float and pump to drive the pump when the float is lifted by an accumulation of the high density liquid in the lower portion of the tank, whereby the high density liquid is reemulsified and prevented from entering the withdrawal conduit.
  • a method of preventing separated higher density liquid form an emulsion of different density liquids stored in a tank from being withdrawn from a withdrawal conduit disposed adjacent the lower portion of the tank for drawing off the emulsified liquid from the tank, when performed in accordance with this invention is characterized by the steps of disposing within the tank, a float which floats on the higher density liquid and sinks in the emulsion, disposing a pump so that its suction is in fluid communication with the lowest portion of the tank and it discharges into the central elevation of the tank, and providing a drive cooperatively associated with the pump and the float so that when the float is lifted by an accumulation of higher density liquid in the lower portion of the tank, the drive operates the pump, whereby the high density liquid is reemulsified and prevented from entering the withdrawal conduit.
  • the Sole Figure is a schematic view of an apparatus for preventing separated high density liquid from an emulsion of different density liquids stored in a tank from being withdrawn via a withdrawal conduit disposed in fluid communication with a lower portion of the tank.
  • FIG. 1 a schematic view of an apparatus and method for preventing separated higher density liquid form an emulsion of different density liquids stored in a tank 1 from being withdrawn from a withdrawal conduit 3 disposed adjacent the lower portion of the tank 1 for drawing off the emulsified liquid from the tank 1.
  • the apparatus comprises a float 5 disposed within the tank 1 and having a density which will causes it to sink in the emulsion and float on the high density liquid.
  • the interface of the high density liquid and emulsion is indicated at 7.
  • a pump 9 is disposed to take its suction from the lower portion of the tank 1 via a conduit or pipe 11 and discharges in the tank 1 via the conduit or pipe 13 which terminates adjacent the central portion of the tank 1.
  • the discharge is disposed adjacent the central portion of the tank 1 to reemulsify high density fluid and prevent air entrapment in the emulsion.
  • An electric motor or drive 15 is coupled to the pump 9 to drive the pump 9.
  • the electric motor 15 is preferably a DC motor and power is supplied by a battery 16, however an AC motor and power supply could be utilized.
  • the capacity or output of the pump 9 is generally equivalent to 1/24 of the volume of the tank 1 per hour or sufficient to pump the volume of the tank in 24 hours.
  • the discharge head of the pump 9 is sufficient to ensure that the separated high density liquid is reemulsified.
  • a relay or other type of switch 17 is cooperatively associated with the float 5 and electric motor 15 to drive the pump 9.
  • the float 15 When the float 15 is lifted a predetermined amount by the accumulation of high density liquid at the bottom of the tank 1 it activates the relay 17 closing a switch portion 19 within the relay 17 to run the pump and reemulsify the high density liquid as it is pumped back into the emulsion.
  • a time delay 21 is cooperatively associated with the relay 17 to hold the switch portion 19 closed a predetermined time as the accumulated high density liquid is being pumped from the bottom of the tank 1 and into the emulsion.
  • the pump 9 is run for a predetermined period of time, insuring that all of the separated liquid has been removed from the bottom of tank 1 and reemulsified.
  • the length of time that the pump 9 runs is dependent on the size of the tank the volume of accumulated high density liquid required to lift the float 5 and activate the relay 17 and the disposition of a withdrawal conduit 3 in the lower portion of the tank 1.
  • a method of preventing separated higher density liquid form an emulsion of different density liquids stored in the tank 1 from being withdrawn from a withdrawal conduit 3 disposed adjacent the lower portion of the tank 1 for drawing off the emulsified liquid from the tank is characterized by the steps of disposing within the tank 1, the float 5 which floats on the higher density liquid and sinks in the emulsion, disposing the pump 9 so that its suction is in fluid communication with the lower portion of the tank 1 and the pump 9 discharges into the central elevation of the tank 1, and providing the electric motor or other drive 15 cooperatively associated with the pump 9 and the float 5 so that when the float 5 is lifted by an accumulation of higher density liquid in the lower portion of the tank 1, the electric motor 15 operates the pump 9.
  • the relay or other type of switch 17 is provided and is cooperatively associated with the electric motor 15 and the float 5 so that when the float 5 is lifted by the higher density liquid a predetermined amount, the relay 17 starts the electric motor 15 and the pump 9.
  • the time delay 21 is cooperatively associated with the relay 17 to keep the electric motor 15 and pump 9 running a predetermined period of time after they were started, whereby the accumulated high density liquid is removed from the bottom of the tank 1 and reemulsified preventing separated high density fluid from entering the withdrawal conduit 3.
  • An apparatus and method for preventing separated higher density liquid form an emulsion of different density liquids stored in the tank 1 from being withdrawn from a withdrawal conduit 3 disposed adjacent the lower portion of the tank 1 for drawing off the emulsified liquid from the tank when made and performed in accordance with this invention advantageously is reliable and economical to manufacture, operate and maintain.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

L'invention concerne un dispositif et un procédé de détection et de gestion d'une séparation liquide dans une émulsion liquide placée dans un réservoir (1), lequel procédé consiste à empêcher le liquide séparé de pénétrer dans une conduite d'évacuation (3) agencée dans la portion inférieure du réservoir (1), à l'aide d'un dispositif comprenant une pompe (9) entraînée par un moteur électrique (15) et destinée à aspirer du liquide, à partir de la portion inférieure de la citerne (1), pour décharger ce liquide à un niveau adjacent à la portion centrale du réservoir, un flotteur (5) qui s'enfonce dans l'émulsion pour flotter sur le liquide haute densité et est associé de manière coopérante à un relais (17), afin de mettre en marche le moteur de la pompe (15) lorsque l'accumulation du liquide haute densité entraîne le soulèvement du flotteur (5) jusqu'à un certain niveau, ainsi qu'un temporisateur (21) actionnant la pompe (9) pendant une période prédéterminée, suffisante pour émulsionner à nouveau le liquide haute densité accumulé et empêcher celui-ci de pénétrer dans la conduite d'évacuation (3).
PCT/US1997/015686 1996-10-30 1997-09-05 Dispositif et procede de detection et de gestion d'une separation liquide dans des emulsions liquides Ceased WO1998018545A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE69709154T DE69709154T2 (de) 1996-10-30 1997-09-05 Verfahren und gerät zum erfassen und behandeln einer flüssigkeitstrennung in flüssigkeitsemulsionen
EP97940866A EP0935495B1 (fr) 1996-10-30 1997-09-05 Dispositif et procede de detection et de gestion d'une separation liquide dans des emulsions liquides
AU42548/97A AU715418B2 (en) 1996-10-30 1997-09-05 An apparatus and method for detecting and handling liquid separation in liquid emulsions
CA002266370A CA2266370C (fr) 1996-10-30 1997-09-05 Dispositif et procede de detection et de gestion d'une separation liquide dans des emulsions liquides
JP52045098A JP3659506B2 (ja) 1996-10-30 1997-09-05 液状エマルジョンの液体分離を検出し、処理する装置及び方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/739,846 US5701924A (en) 1996-10-30 1996-10-30 Apparatus and method for detecting and handling liquid separation in liquid emulsions
US08/739,846 1996-10-30

Publications (1)

Publication Number Publication Date
WO1998018545A1 true WO1998018545A1 (fr) 1998-05-07

Family

ID=24974014

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/015686 Ceased WO1998018545A1 (fr) 1996-10-30 1997-09-05 Dispositif et procede de detection et de gestion d'une separation liquide dans des emulsions liquides

Country Status (7)

Country Link
US (1) US5701924A (fr)
EP (1) EP0935495B1 (fr)
JP (1) JP3659506B2 (fr)
AU (1) AU715418B2 (fr)
CA (1) CA2266370C (fr)
DE (1) DE69709154T2 (fr)
WO (1) WO1998018545A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7644723B2 (en) * 2005-05-18 2010-01-12 Endre Zsigmond Transmix prevention lock
JP2007239510A (ja) * 2006-03-06 2007-09-20 Toyota Motor Corp 内燃機関の制御装置
US20080152491A1 (en) * 2006-12-26 2008-06-26 Davies Lucy V Coatings for use in fuel system components
US20090026292A1 (en) * 2007-07-27 2009-01-29 Caterpillar Inc. Coatings for use in fuel system components
CN115541852A (zh) * 2022-09-19 2022-12-30 安徽金大仪器有限公司 一种高精度含水分析仪

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344659A (en) * 1965-03-19 1967-10-03 H R Stasney Apparatus for determining the composition of multiphase fluids
DE2437481A1 (de) * 1974-08-03 1976-02-12 Bayer Ag Verfahren und vorrichtung zum dispergieren von zwei ineinander nicht mischbaren fluessigkeiten unterschiedlicher dichte
DD134329A5 (de) * 1977-12-09 1979-02-21 Kreonite Inc Mischer fuer fluessigkeiten
EP0269998A2 (fr) * 1986-12-03 1988-06-08 Josef Meissner GmbH & Co. Procédé et appareil de stockage d'explosifs liquides sous forme d'émulsion dans l'eau
DE4410632A1 (de) * 1994-03-26 1995-09-28 Passavant Werke Abscheider, insbesondere Leichtstoff- und/oder Sinkstoffabscheider

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US593333A (en) * 1897-11-09 Device for separating liquids of different
US3253606A (en) * 1962-01-02 1966-05-31 Phillips Petroleum Co Electrical measuring system
US3942374A (en) * 1968-05-23 1976-03-09 N L Industries, Inc. Apparatus for the determination of the quantity of oil
SU430301A1 (ru) * 1969-04-21 1974-05-30 Н. А. Лаврентьев, М. С. Бабак , В. В. шевич УСТРОЙСТВО ДЛЯ ОТБОРА ЖИДКОСТИ ИЗ ЕМКОСТИВ П Т Б |'п1*1гзт«пJi^^+SI,.* f У0
FR2114226A5 (fr) * 1970-11-20 1972-06-30 Schlumberger Prospection
US3826133A (en) * 1971-01-28 1974-07-30 Schlumberger Technology Corp Apparatus for sampling fluids flowing in a production well
US3911256A (en) * 1973-12-19 1975-10-07 Ray L Jones Apparatus for testing and analyzing fluid mixture
US4953975A (en) * 1989-01-30 1990-09-04 Levine Robert A Correction of material layer volume measurements
US4960513A (en) * 1989-08-21 1990-10-02 Young James T Separator for liquids of different densities
US5114239A (en) * 1989-09-21 1992-05-19 Halliburton Company Mixing apparatus and method
US5156114A (en) * 1989-11-22 1992-10-20 Gunnerman Rudolf W Aqueous fuel for internal combustion engine and method of combustion
US4982755A (en) * 1990-04-26 1991-01-08 Electrovert, Ltd. Flux density control system
US5057858A (en) * 1990-11-23 1991-10-15 Gunter Woog Developer recycler in connection with photo processing machine
US5251488A (en) * 1991-02-14 1993-10-12 Texaco Inc. Multiphase volume and flow test instrument
US5284492A (en) * 1991-10-01 1994-02-08 Nalco Fuel Tech Enhanced lubricity fuel oil emulsions
US5564462A (en) * 1994-10-19 1996-10-15 Storch; Paul Water conservation delivery system using temperature-controlled by-pass circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344659A (en) * 1965-03-19 1967-10-03 H R Stasney Apparatus for determining the composition of multiphase fluids
DE2437481A1 (de) * 1974-08-03 1976-02-12 Bayer Ag Verfahren und vorrichtung zum dispergieren von zwei ineinander nicht mischbaren fluessigkeiten unterschiedlicher dichte
DD134329A5 (de) * 1977-12-09 1979-02-21 Kreonite Inc Mischer fuer fluessigkeiten
EP0269998A2 (fr) * 1986-12-03 1988-06-08 Josef Meissner GmbH & Co. Procédé et appareil de stockage d'explosifs liquides sous forme d'émulsion dans l'eau
DE4410632A1 (de) * 1994-03-26 1995-09-28 Passavant Werke Abscheider, insbesondere Leichtstoff- und/oder Sinkstoffabscheider

Also Published As

Publication number Publication date
JP2001503320A (ja) 2001-03-13
DE69709154D1 (de) 2002-01-24
AU4254897A (en) 1998-05-22
EP0935495A1 (fr) 1999-08-18
CA2266370A1 (fr) 1998-05-07
CA2266370C (fr) 2005-04-19
DE69709154T2 (de) 2002-07-18
AU715418B2 (en) 2000-02-03
JP3659506B2 (ja) 2005-06-15
US5701924A (en) 1997-12-30
EP0935495B1 (fr) 2001-12-12

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